Question

21. State yet another one of Maxwell's equations as a formula. If that equation has another name, give that name

Answer 1

al. Anothere one of Manwell's equations is as follows a- ( statement) E. de = -d & B. ds vxÊ = - aB .. where Å is the electric field de D the line element 8 is the magnetic field and ds is the swelface element. This law has a name as Faradays law of induction. The statement is that the ewel of an electrie field girees the time rate of change of associated magnetic field. 22. Cause-effect relationship a- This law tells us about o how a time varying magnetic field , ln other words, if there is a rate of change in magnetic fluse in a surface element (25) , then an electric field (A) is induced parallel to the direction of the sweface element. An enample is if a loop of wire has a moring magnests in front of it, then a ewount is induced in the loop with induced electric AO

voltage as E=und (B ods), where N is the no. of twens in the loop. So for the cause of spatially ou time varying magnetic field, an electric field always acompanies as an effect. 23) The remaining Manwell's equation as a formula is » (statement). B. de = Mo I = 1/6 7. ds + & d & Eds) => 0x8 = Ma (3 + 6 2 where B is the magnetic field, de is the line elements I is the evvrent which is decomposed as sweface ewveent } and rate of change of charge... density as of 8. d ); la is the permeateilly of free space and as that statement is . the there is always Now always that there is a magnetic field associated with the free and bound ewveent in a conductors of length (de) and displacement enveent (to 2 E) along the sweface enclosed ley the line element Cele). Another name of this equation is Amperes vecutal law (dB.de = lo Ienclosed I qo $8 (magnetic field around a euvrent conducting wire is given ley this law